From this discussion in the mailing list: https://lists.linuxfoundation.org/pipermail/automotive-discussions/2019-June/007496.html

There doesn't seem to be a mDNS implementation in master/halibut, which should allow us to do things like `ssh machine-name` instead of finding out the IP address by other means.

sdesneux resolved that the problem is the missing package avahi in master:

AFAICS, avahi just "disappeared" from the distro:

Guppy 7.0.3:
?? avahi-daemon aarch64 0.6.32??
?? avahi-dev aarch64 0.6.32??
?? libavahi-client3 aarch64 0.6.32??
?? libavahi-common3 aarch64 0.6.32??
?? libavahi-core7 aarch64 0.6.32??
?? libavahi-glib1 aarch64 0.6.32??
?? libavahi-gobject0 aarch64 0.6.32??

Master:
?? libavahi-client3 aarch64 0.7??
?? libavahi-common3 aarch64 0.7??
?? libavahi-glib1 aarch64 0.7??

Maybe it was pulled by default in 'rocko' and not in 'thud'. In any case, this
?? is easy to solve.??

asdf